Here are two questions about pitch retrieval method, which puzzled me
for a long time.
1. Since pitch is a kind of subjective and perceived...

Here are two questions about pitch retrieval method, which puzzled me
for a long time.
1. Since pitch is a kind of subjective and perceived factor, how it
can be searched by computing ?
2. Let us assume pitch can be searched by that.
As we know, the pitch value of old man can be low to 55hz or so.
Some well-known speech codec have a high pass filter located at the
beginning of proc...

Here are some excerpts from an old comp.dsp thread article:
> What I did was using the Pitch Shifter example from the page
> (finetuned...

Here are some excerpts from an old comp.dsp thread article:
> What I did was using the Pitch Shifter example from the page
> (finetuned it/speeded it up a bit with some different FFT algorithm)
> to change the pitch. Afterwards I altered the samplerate so the pitch
> would be back to where it was, but now the duration has changed.
Instead of shifting the pitch and resampling, you can do i

Hi,
I hope to pitch prediction gain between two pitch estimation
algorithms. Does anyone here have a software to compute pitch
prediction...

Hi,
I hope to pitch prediction gain between two pitch estimation
algorithms. Does anyone here have a software to compute pitch
prediction gain or show me how to calculate pitch prediction gain?
Thanks in advance!

Hello,
For my application, I have to segment a speech waveform in to
pitch-synchronous frames i.e. each frame is two pitch periods long...

Hello,
For my application, I have to segment a speech waveform in to
pitch-synchronous frames i.e. each frame is two pitch periods long and
centered around the current pitch mark. Can anyone give me an idea how to
approach this problem (using Matlab)?
Thanks.

Our group is conducting a research about filtering pitch of a sentence.
What specific software can we used in order to detect its pitch and...

Our group is conducting a research about filtering pitch of a sentence.
What specific software can we used in order to detect its pitch and filter
it?
Respectfully yours,
Myzel Hosmillo
Batangas, Philippines

axlq wrote:
> smuglr wrote:
> > I know the general subject of pitch detection has been flogged
> > to death, but I am looking...

axlq wrote:
> smuglr wrote:
> > I know the general subject of pitch detection has been flogged
> > to death, but I am looking specifically for pitch detection in
> > a sung melody.
>
> I'm wondering how that will work with some opera singers, who
> have such a heavy vibrato in their voice that there's no
> detectable constant pitch, rather a modulated frequency.

Hi,
I'm thinking about an audio effect, which is probably called
harmonization. I think it should teoretically apply several pitch changes
and...

Hi,
I'm thinking about an audio effect, which is probably called
harmonization. I think it should teoretically apply several pitch changes
and sum all of them together. At least this is what I think is
harmonization. Probably all of the pitch changes might be a multiply of 2
(octaves). Any ideas?
It might be done by brute force - STFT for each of the pitch change - but
it does not seem very fa...

I coded a quick Matlab script to do a pitch shift
using the first method that came to mind and which
I'm guessing is the first method that comes...

I coded a quick Matlab script to do a pitch shift
using the first method that came to mind and which
I'm guessing is the first method that comes to
everyone's mind when they first think about this
problem.
I took the time samples divided them into overlapped
frames, took the DFT of each frame, pitch shifted,
and took the IDFT, etc.
By pitch shifting the DFT I mean: (SHIFT < 1)
for i=1

/* cross-posted to both comp.dsp and comp.speech.research */
Hi everyone.
I note that a lot of papers on pitch detection use the TIMIT...

/* cross-posted to both comp.dsp and comp.speech.research */
Hi everyone.
I note that a lot of papers on pitch detection use the TIMIT database
for experiments. However as far as I can see from readme files, the
database does not include verified pitch information for the sentences.
How then do people measure the accuracy of their pitch-detection
methods. I haven't yet read in detail eve...

Hi,
I am almost a complete newbie when it comes to DSP. I've been studying
various internet articles a lot over the last week but I still have...

Hi,
I am almost a complete newbie when it comes to DSP. I've been studying
various internet articles a lot over the last week but I still have some
questions that I don't understand.
What I'm trying to accomplish is to resample an audio signal to change
it's pitch. I don't care if the length changes, I just want to get pitch
changes. Since some pitch changes may be somewhat small (notes) I n...

Hi dsp programmin gurus all over the world....
I?m looking for a rock-stable algorithm to do some pitch detection for a
chromatic...

Hi dsp programmin gurus all over the world....
I?m looking for a rock-stable algorithm to do some pitch detection for a
chromatic tuner.
(should work with bad-signal input, like pitch detection through a telephone
line...)
any ideas ?
with compliments, and best thanx to any answer
martin

Hi there,
I am going to attempt to program the TMS320C6713 with a pitch shifting
algorithm to work in as near real-time as possible.
Does...

Hi there,
I am going to attempt to program the TMS320C6713 with a pitch shifting
algorithm to work in as near real-time as possible.
Does anyone have experience of using this board for this type of
application?
I was looking at the code on www.dspdimension.com for pitch shifting.
Could this be easily adapted for use on the TMS320C6713?
Any help or advice appreciated!
Bob.

Hi,
I know the general subject of pitch detection has been flogged to death,
but I am looking specifically for pitch detection in a sung...

Hi,
I know the general subject of pitch detection has been flogged to death,
but I am looking specifically for pitch detection in a sung melody. It
will be performed in real-time with high signal-to-noise.
I'm currently using auto-correlation to find an estimate or the
fundamental frequency, and then using phase-unwrapping to get high
resolution. This works well for many instruments, but se...

I have looked at some literature on using autocorrelation or AMDF for picth
detection/extraction.
If I understand correctly, all these methods...

I have looked at some literature on using autocorrelation or AMDF for picth
detection/extraction.
If I understand correctly, all these methods have two parts -- first
construct the functional that can be used to extrac the period/pitch
(AMDF, autocorrelation etc.), second, find peak/null and the associated
lag index to obtain the pitch.
What I need help is how the extraction part is general...

Hi All,
I write some software that discriminate voices of adults children and baies.
I use a simple pitch tracker that filters the base band...

Hi All,
I write some software that discriminate voices of adults children and baies.
I use a simple pitch tracker that filters the base band and looks for a zero
crossing to identify the pitch. This works fine and depending on the pitch
length it decides whther its an adult a child or a baby voice. I'm looking
for a way to improve the algorithm by checking the formants or other voice
para...

Hey,
My name is Owen and I am currently working on a project for my University
Degree. I am a complete newbie to the world of DSP. I am basically...

Hey,
My name is Owen and I am currently working on a project for my University
Degree. I am a complete newbie to the world of DSP. I am basically looking
for *basic* algorithms (or as basic as possible) for simple pitch shifting
and time shifting. I'm not overly fussed with having the best possible
sound, I just generally need help with where to begin coding for a time
and pitch shifter. The si...

I am interested in learning about Pitch Detection. I am a c/c++
programmer (20+ yrs) and am interested in pitch recognition for the
purpose of...

I am interested in learning about Pitch Detection. I am a c/c++
programmer (20+ yrs) and am interested in pitch recognition for the
purpose of developing an ear training program for my grandsons, ie, a
program to help someone develop the ability to play by ear, simple
melodies.
My math skills include the standard 3 calculus for engineers courses
(however I'm not sure how much I remember,...

Hi! I want to analyse music clip.doing STFT on this clip for pitch
tracking results for time vs frequency graph. the graph should be 2D
plot....

Hi! I want to analyse music clip.doing STFT on this clip for pitch
tracking results for time vs frequency graph. the graph should be 2D
plot. how to do this in matlab? I want to find out the pitch of tones
in music clip.
regards
kalyani